Telephone-switchboard lamp.



No. 829,092. PATENTED AUG. 21, 1906.

J. L. WEIGHT. 4 TELEPHONE SWXTOHBOARD LAMP.

APkLIGATION FILED MAY 10, 1905.

311 wen 59 witmeowa UNITE, glili' l l lti i {l h h liij JOSEPH LANE WRIGHT, or wnsrnneron, nrsrnicr or continent,

' Assienon TO THE NATIONAL nnoiasns no CORPURATION, or

WASHINGTON, nisraicr (JOLilli lBli i, a, oonros iriou or-rnn .DlSTRlCT OF COLUll'lBlA.

E -Emma!s nset-oneness salin No. 829,092. $pecification of Letters Patent. l atented Aug. 21,.li988..

Application filed May 10.1905. Serial llo. 259,728.

To all whom it may concern.- stantially cylindrical in cross-section and Be it known that I, Josnrn LANE Wmonr, which is provided with entirely-inclosed a citizen of the United States, residing portion 5, withinwhich lies the lamp-bulb 3. Washington, in the District of Columbia; The jack is provided with an interior insu- 55- 5 have invented certain new and useful Imlatingslecve l and the usual contacts 5 and provcments in Tole hone Switchboard. tithe lattersnitable SlJI'lIlg etal. The con Lamps, of which the to string is a specificatacts are held separated in the casing 1 by an tion, reference being had therein to the acinsulating-block Y; The above construction companying drawings. in no way forms any part of my invention, 6o

IQ My invention relates to incandescent except insoinuch as the parts cooperate with lam s, and more especially to that type used the lamp to make, a complete device. V

for inc-signals in tclephone-switchboards. Referring to .Z and 3, 3 represents the In switchboards of the type now in almost lain rhulh, as in rig. l, to which are secured universal use a series of line-lamp-jackstrips the amp-contacts 8 and 9, which partially 65 15 are arranged in tiers on the switchboard in surroundthe hell; 3 andwhich are insulated front of the operator with their contact ends apart, by an insulathig-block 10. Those passed through the board and only the faces contacts are, as usual, properly secured to thereof showing. Below each strip of lampthe terminal ends oi the lamp-flaments.

jacks are placed the lino-plug jacks, which One both of the contact members 8 and 9' 7o 20 correspond with the lamp-jacks above. It is provided with a projecting end 11, which will be also umlorst-oodthat the same arextends along the side of the bulb 3 and rangcinent is made regarding the supervisory slightly past its end, where itis bent into a .signals, and in both cases the lamps of the tongue or lip 12. In Fig. 2 I have shown the line and supervisory signals are almost i1nprojecting cnd 1.1 on one contact only, while 7 5 5 possible to get at. At present when a lamp in Fig. each contact is provided with this is burned out or otherwise rendered useless projection 11 and. lip 12. the trouble man or a special switchboard in Figs. and 5 the same style of lam a is man has to be called to repair the wrong. snown as Figs. 1, and 3; but inst-ea oi The lamp-jacks are of necessity very small the lip' 12, as in Figs. 2 and 3, l have shown 8c 3 and the space between the lamp-hulb and the projecting end. 11 provided with an aperthe jack is consequently so, and as it is inns, tone 1:.

possible to remove the lamps from the back Any suitable sort of tool may be used to of the switchboard and the repair man has to extract the bulbs, such as a wire hent similar do all the Work from the front a pair of special to a shoe-hook or vith two legs having 85 3 5 pliers are used to grasp the smooth surface of hooked ends.

' the lamp-bulb to removethe lamp. My in It will be evident that I could make many vcntion is designed to obviate all these dillichanges in construction. without departing cultics andto provide means whereby any .i'ronr the spirit of the, invention. For inperson can attend to thismatterwithout stance, the'projecting'end oi the contact 11 go 4 special trouble. l (shown in L igs. '4; and 5) maybe placed on" My invention is illustrated in the 800031 each side. Any form of lamp might be used, panying drawings, in which I and the proiecting member nia be con- Figure 1 is a. side elevation of a lamp nee edwith the bulb in any suitah e manner. inclosed in a jack, the jack being shown in it will be'ohserved that the tongues 12 nor 5 45 section. Fig. '2'is a side elevation of the the projecting members 11 in no way obscure lamp removed from the jack-. Fig. 3 is a side the light from the lamp, andhy practical test elevation of a modification. F51 4: is a side it has been shown that the difierence cannot elevation of a further modification. Fig. 5 be noticed between lamps havin this device is a to plan view thereof. and lamps without it when shielded hehinduioo 5 In h ig. 1 of tho 'd1'awings, 1 represents a the translucent numberlates of thejacks.

Having thus describe myinvention, What 1:..mp-jaok of the ordinary type which is sub- I claim, and desire to secure by Letters Patent, is

1. An incandescent lamp having means independent of the bulb for facilitating its removal from its socket.

2. An incandescent lamp comprising a bulb and contacts, one or more of said contacts provided with means for facilitating the removal of the lamp from its socket. 1o 3. An incandescent lamp comprising a I bulb and contacts, one or more of said con.-

tacts provided with a projecting member adapted to facilitate the removal of the lamp from its socket.

15 4. An incandescent lamp comprising a bulb and contacts, one or more of said contacts provided with a projecting member; said prO ectmg member having means to facilitate the removal of the lamp from its socket.

5. An incandescent lamp comprising a bulb and lamp-contacts, one or more of said lamp-contacts provided. with an integral projecting member, and a transverse tongue on said member.

in testimony whereof I my signature in presence of two Witnesses. 

